Return-path: Received: from mail-lb0-f172.google.com ([209.85.217.172]:63961 "EHLO mail-lb0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1763396Ab3ECTkk (ORCPT ); Fri, 3 May 2013 15:40:40 -0400 Received: by mail-lb0-f172.google.com with SMTP id y6so1867920lbh.3 for ; Fri, 03 May 2013 12:40:38 -0700 (PDT) Date: Fri, 3 May 2013 21:40:32 +0200 (CEST) From: Thommy Jakobsson To: "John W. Linville" cc: =?ISO-8859-2?Q?Rafa=B3_Mi=B3ecki?= , linux-wireless@vger.kernel.org, b43-dev@lists.infradead.org, m@bues.ch, piotras@gmail.com, Larry.Finger@lwfinger.net Subject: Re: [PATCH] B43: Handle DMA RX descriptor underrun In-Reply-To: <20130503173537.GK2069@tuxdriver.com> Message-ID: (sfid-20130503_214044_519665_611B62CB) References: <20130503173537.GK2069@tuxdriver.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-wireless-owner@vger.kernel.org List-ID: On Fri, 3 May 2013, John W. Linville wrote: > On Wed, Apr 24, 2013 at 09:00:59AM +0200, Rafa? Mi?ecki wrote: > > 2013/4/23 Thommy Jakobsson : > > > From: Thommy Jakobsson > > > > > > Add handling of rx descriptor underflow. This fixes a fault that could > > > happen on slow machines, where data is received faster than the CPU can > > > handle. In such a case the device will use up all rx descriptors and > > > refuse to send any more data before confirming that it is ok. This > > > patch enables necessary interrupt to discover such a situation and will > > > handle them by dropping everything in the ring buffer. > > > > Thanks for working on this, I didn't really got enough time to follow > > your active discussion actively. > > > > I'll try to test this patch on my devices over the next weekend. > > Any word on this testing? Should this go to 3.10? It still runs on my device without any problem. Don't know anything about Rafael's testing though BR, Thommy Jakobsson